Flushing blowdown device

The utility model discloses a flushing blowdown device which comprises a base, self-locking universal wheels are fixedly connected to the four corners of the bottom of the base, a water tank is fixedly connected to the base, a top plate of the water tank is in threaded connection with a threaded cover, a connecting frame is fixedly connected to the top plate of the water tank, and two air cylinders are symmetrically and fixedly connected to the bottom of the top plate of the connecting frame; a lifting plate is fixedly connected between output shafts of the two air cylinders, a connecting pipe is rotatably installed on the lifting plate, when a grouting funnel on a grouting pump needs to be washed and discharged, the device is moved to a proper position firstly, under the action of self-locking universal wheels, the device is convenient to move, and the device is convenient to use. And the cleaning pipe and the cleaning brush are located above the grouting funnel, and then water is sprayed out under the actio